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公开(公告)号：DE112005000415T5
公开(公告)日：2006-12-28
申请号：DE112005000415
申请日：2005-02-11
Applicant: ROSEMOUNT INC
Inventor： ROMO MARK G , RUD STANLEY E , WILLCOX CHARLES R , KARSCHNIA ROBERT J
Abstract: An electrically variable optical attenuator and associated methods are disclosed. In one aspect, the attenuator includes at least one sensor that provides a sensor output with respect to a variable that affects attenuation. Methods of characterizing the attenuator include obtaining a set of attenuation/sensed variable data, and generating a relationship (such as a look-up table or mathematical function) relating the sensed variable to the attenuation. Aspects of the invention also include characterizing the control input/attenuation output to be related by a selected mathematical function.
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公开(公告)号：BR8207848A
公开(公告)日：1983-08-30
申请号：BR8207848
申请日：1982-07-16
Applicant: ROSEMOUNT INC
Inventor： RUD STANLEY E
Abstract: A capacitive pressure sensor has a diaphragm means a portion of which is conductive which forms a first capacitor electrode. The sensor also has a reference disc means a portion of which is conductive which forms a second capacitive electrode. The diaphragm means and the reference disc means are supported in a spaced, over-lying relationship to each other by a peripheral spacer means. Responsive to pressure, the diaphragm means deflects relative to the reference disc means thus changing the capacitive spacing of the diaphragm means and the reference disc means. The diaphragm means, reference disc means and spacer means are formed from substantially the same material. The spacer means is disposed between the diaphragm means and the reference disc means adjacent their outer edges and the diaphragm means, reference disc means and spacer means are then fused together.
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公开(公告)号：EP0083647A4
公开(公告)日：1984-06-29
申请号：EP82902577
申请日：1982-07-16
Applicant: ROSEMOUNT INC
Inventor： RUD STANLEY E
CPC classification number: G01L9/0075 , G01L19/02
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